Smooth scroll anchor links WITHOUT jQuery
Using the function from here: JavaScript animation and modifying it to modify a property (not only a style's property), you can try something like this:
DEMO: http://jsfiddle.net/7TAa2/1/
Just saying...
function animate(elem, style, unit, from, to, time, prop) {
if (!elem) {
return;
}
var start = new Date().getTime(),
timer = setInterval(function() {
var step = Math.min(1, (new Date().getTime() - start) / time);
if (prop) {
elem[style] = (from + step * (to - from)) + unit;
} else {
elem.style[style] = (from + step * (to - from)) + unit;
}
if (step === 1) {
clearInterval(timer);
}
}, 25);
if (prop) {
elem[style] = from + unit;
} else {
elem.style[style] = from + unit;
}
}
window.onload = function() {
var target = document.getElementById("div5");
animate(document.scrollingElement || document.documentElement, "scrollTop", "", 0, target.offsetTop, 2000, true);
};
div {
height: 50px;
}
<div id="div1">asdf1</div>
<div id="div2">asdf2</div>
<div id="div3">asdf3</div>
<div id="div4">asdf4</div>
<div id="div5">asdf5</div>
<div id="div6">asdf6</div>
<div id="div7">asdf7</div>
<div id="div8">asdf8</div>
<div id="div9">asdf9</div>
<div id="div10">asdf10</div>
<div id="div10">asdf11</div>
<div id="div10">asdf12</div>
<div id="div10">asdf13</div>
<div id="div10">asdf14</div>
<div id="div10">asdf15</div>
<div id="div10">asdf16</div>
<div id="div10">asdf17</div>
<div id="div10">asdf18</div>
<div id="div10">asdf19</div>
<div id="div10">asdf20</div>
Scroll smoothly to specific element on page
Just made this javascript only solution below.
Simple usage:
EPPZScrollTo.scrollVerticalToElementById('signup_form', 20);
Engine object (you can fiddle with filter, fps values):
/**
*
* Created by Borbás Geri on 12/17/13
* Copyright (c) 2013 eppz! development, LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
var EPPZScrollTo =
{
/**
* Helpers.
*/
documentVerticalScrollPosition: function()
{
if (self.pageYOffset) return self.pageYOffset; // Firefox, Chrome, Opera, Safari.
if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop; // Internet Explorer 6 (standards mode).
if (document.body.scrollTop) return document.body.scrollTop; // Internet Explorer 6, 7 and 8.
return 0; // None of the above.
},
viewportHeight: function()
{ return (document.compatMode === "CSS1Compat") ? document.documentElement.clientHeight : document.body.clientHeight; },
documentHeight: function()
{ return (document.height !== undefined) ? document.height : document.body.offsetHeight; },
documentMaximumScrollPosition: function()
{ return this.documentHeight() - this.viewportHeight(); },
elementVerticalClientPositionById: function(id)
{
var element = document.getElementById(id);
var rectangle = element.getBoundingClientRect();
return rectangle.top;
},
/**
* Animation tick.
*/
scrollVerticalTickToPosition: function(currentPosition, targetPosition)
{
var filter = 0.2;
var fps = 60;
var difference = parseFloat(targetPosition) - parseFloat(currentPosition);
// Snap, then stop if arrived.
var arrived = (Math.abs(difference) <= 0.5);
if (arrived)
{
// Apply target.
scrollTo(0.0, targetPosition);
return;
}
// Filtered position.
currentPosition = (parseFloat(currentPosition) * (1.0 - filter)) + (parseFloat(targetPosition) * filter);
// Apply target.
scrollTo(0.0, Math.round(currentPosition));
// Schedule next tick.
setTimeout("EPPZScrollTo.scrollVerticalTickToPosition("+currentPosition+", "+targetPosition+")", (1000 / fps));
},
/**
* For public use.
*
* @param id The id of the element to scroll to.
* @param padding Top padding to apply above element.
*/
scrollVerticalToElementById: function(id, padding)
{
var element = document.getElementById(id);
if (element == null)
{
console.warn('Cannot find element with id \''+id+'\'.');
return;
}
var targetPosition = this.documentVerticalScrollPosition() + this.elementVerticalClientPositionById(id) - padding;
var currentPosition = this.documentVerticalScrollPosition();
// Clamp.
var maximumScrollPosition = this.documentMaximumScrollPosition();
if (targetPosition > maximumScrollPosition) targetPosition = maximumScrollPosition;
// Start animation.
this.scrollVerticalTickToPosition(currentPosition, targetPosition);
}
};
Related Topics
Vuejs and Vue.Set(), Update Array
Order of Hoisting in JavaScript
Lodash - Difference Between .Extend()/.Assign() and .Merge()
Using a Variable in Mongodb Update
Getting Binary Content in Node.Js Using Request
How to Use JavaScript or Jquery to Read a Pixel of an Image When User Clicks It
How to Do Two-Way Filtering in Angularjs
Is It Safe to Assume Strict Comparison in a JavaScript Switch Statement
Typescript Recursive Function Composition
What Does ${} (Dollar Sign and Curly Braces) Mean in a String in JavaScript
How to Stop a Page from Unloading (Navigating Away) in Js
Javascript: Uncaught Typeerror: Cannot Call Method 'Addeventlistener' of Null
Uncaught Typeerror: Cannot Read Property 'Value' of Null
Jquery .On() Method with Multiple Event Handlers to One Selector
JavaScript Detect an Ajax Event